Personal Trainers
Train Smarter, Train Harder, Train Refined
Your Personal Trainers in Castle Hill
At The Refinery Studio, we know training should be knowledgeable and based on real experience. That’s why we are the proud host of an impressive collective of trusted, and experienced Personal Trainers within our premium distraction-free training space.
Your Coaches at
The Refinery
Nathan Merlino, Founder & Coach
Harry Turner, Personal Trainer
Your Coaches at The Refinery
Nathan Merlino, Founder and Coach
Harry Turner, Personal Trainer
Harry is a results-driven coach who leads from the front, combining an athlete’s mindset with structured, purposeful training. He prides himself on holding high standards while building strong bonds with clients, creating an environment of trust, accountability, and consistency. His coaching goes beyond the gym floor, helping clients build resilience, confidence, and habits that carry over into everyday life. The goal isn’t just to look better, it’s to move better, perform better, and become the best you that you can be.
Harry specialises in weight loss, body composition, and athletic performance. He also plays rugby at a high level, bringing a hybrid approach that blends strength, conditioning, and real-world athleticism into every program.
“The right environment and the right guidance can turn discipline into momentum.
That’s why I created The Refinery Studio.”
– Nathan Merlino, The Refinery Studio Founder and Personal Trainer